Bedford, MA: Digital Press 1980. First Printing. xxi, , 407 pages. 8vo. Publisher's brown cloth. Printed dj in grey, tan, and blue. Titles printed on rear board upside down. One inch tear to front dj at top. Boards slightly bowed. Clean and bright internally. Near Fine / Near Fine. Cloth. 
"This text is unique in addressing hardware structures and assembly language programming, while also describing the interfaces and mechanics of an operation system ; it introduces the full range of fundamental hardware and software structures ... Using the VAX-11, the authors have raised a host of topics and problems encountered by programmers and operating systems...I highly recommedn this book to those looking for a readable, practical introduction to the fundamentals of hardware and software computer structures." (from forward by Samuel H. Fuller).